Device for detecting and cooling hot journals.



P. J. MURRAY. DEVICE FOR DETECTING AND coouwe HOT JOURNALS.

APPLICATION FILED AUG. II, 1916.

Patented May 29, 1917.

5mm; nfo:- '1 J. MURRRY N6. )614 UNITED STATES PATENT OFFICE.

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. Specification of Letters ratent.

Patented May 29, 1917.

Application filed august 11, 1910. Serial No. 114,409.

To all whom it may concern:

Be it known that I, PAUL J. Mummy, a citizen of the United States, residin at Oswego, in the county of Oswego, tate of New York, have invented a new. and useful Device for Detecting and Cooling Hot Journals; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to a device for detecting and cooling hot journals on railway trains, the object of the invention being to provide a device of this character which embodies novel features of con-' struction whereby air will be automatically supplied to a hot journal for the purpose of cooling the same, the air brakes being simultaneously applied if the journal is sufficiently hot to require immediate attention.

Further objects of the inventionare to provide a device of this character which is comparatively simple and inexpensive in its construction, which can be used in connection with the conventional air brake systems, which is entirely automatic in its operation, and which will either supply a small amount ofair for cooling a slightly hot journal without stopping the train, or supply a larger amount of air and simultaneously apply the air brakes if the journal is sufliciently hot to need prompt attention.

With these and other objects in view, the invention consists in certain novel combi-' nations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed'out in the appended claims.

For a full understanding of the invention, reference is to be had to the follow ing description and accompanying drawin in wh1ch:

igure 1 is a side elevation of one end ofa railway car having the improved device for detecting and cooling hot journals mounted upon the truck thereof.

Fig. 2 is a perspective view showing the device as detached from the truck.

Fig. 3 is an enlarged sectional view through the end of one of the fuse cap thereon.

Fig. 4. is a similar view showing a slight modification.

Fig. 5 is a detail view the air pipes and showing a further modification of the invention.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

For the purpose of illustration the invention is shown as applied to the truck A of a car B, said car being equipped with the conventional .air brake system, of which the numeral 1 designates the air pipe. The end of the car is shown as provided with the usual coupling 2 and air hose 3. Extending transversely across the top of the truck at a point between the wheels is a pipe 4, the middle of the pipe being shown as provided with a T-connection 5 which engages a nipple 6 at one end of a flexible hose the opposite end of the flexible hose being provided with a nipple 8 which engages a T-connection'9 interposed in the air brake pipe 1. The nipples preferably have right and left threads, respectively, so that there is no difliculty in placing the flexible hose 7 in position, or removing it therefrom. The ends of the transverse pipe 4.- communicate with longitudinally extending pipes 10, the ends of the said pipes 10 entering the journal boxes 11. Fuse caps 12 are removably fitted upon the extremities of the pipes 10, each of said fuse caps being provided with a small aperture 13 and a large aperture 14. The small apertures 13 are closed by fuses 15 having a composition which will melt at a comparatively low temperature, apertures 14 are closed by a composition which will temperature.

If one of the fuses 16 having melt at a higher ing to prevent: it from getting so hot as to necessitate stopping the train before reaching a regular stopping place. However, if one of the journal boxes gets so hot as to while the large I m. v i 1,228,381

require prompt attention, the fuse 16 of the ing insuflicient to cause an application of at large aperture 14 will melt, thereby supplythe brakes. ing a larger quantity of air to the journal, 2. The combmatlonv w th a railway car and at the same time exhausting the air including 1135 truck and air-brake system, of from the air brake system to such an extent plpes leading from the air brake pipe to the as to cause a gradual application of the journal boxes of the truck, fuse caps arto regular air brakes. The train is thus ranged within the ournal boxes and apbrought to a stop, and the hot journal can plied to the ends of the pipes, said fuse caps be easily detected by the hissing sound being each provided with a small aperture caused by the. escaping air. The air will and a large aperture, and fuses closing the cool the journal, after which a new fuse apertures, the fuse of the small. aperture 3'5 is applied and the journal box repacked. being of a composition wlnch w1ll melt at The train can then proceed upon its way. a lower temperature than that of the large A slight modification is shown by aperture so that if the ournal is only 4, in which the cap 12 is provided with slightly heated the small aperture will be whistle members 17 located respectively over opened, while if the journa is hot the large 80 the apertures 13 and 14. These whistles aperture will also be opened, thereby exhave a difl'ferent construction so as to give hausting the am from the air-brake system different sounds, and when one of the fuses and caus ng the air-brakes to be applied,

20 is melted, the escaping air will sound the the escapmg air in either instance serving whistle. This is not at all essential, although to cool the ournal. 7 85 it may, under some circumstances, be of 3. lthe eombmation with a railway car assistance in locating the hot journal. including its truck and air brake system, Where the journal is only slightly heated of pipes leading from the air brake pipe to and only the fuse 15 of the small aperture the journal boxes of the truck, and fuse 13 melts, the train can proceed without demeans normally closing the ends of the pipes 90 lay to a regular stopping place, whereupon and constructed to permit a small quantlty the journal can be repacked and properly of air to escape and play upon the ournals attended to. when the latter are sl'ghtly heated and to A further slight modification is shown by subsequently permit the escape of a large Fig. 5, in which the heavier fuse 16 is roquantity of air and cause the air brakes to 95 vided with a central opening within w ich be applied when the journals become hot. the lighter fuse 15 is fitted. It ma be con- 4. The combination with a railway car venient to assemble the fuses in t is manincluding its truck and air-brake system,

ner, and the heavier fuse could be conof a transverse pipe extending across. the

structed to be threaded into the cap 12, or truck, a flexible pipe establishing comm 1100 otherwise fitted to the same. It would pro cation between the transverse pipe and the ably be preferable to have the fuses fitted air-brake pipe, branch pipes leading from in extra caps at the shops, so that in order the ends of the transverse pipe to the jour- 40 to replace a blown fuse it would be merely nal boxes of the truck, fuse caps arranged necessary to remove the cap 12 and subwithin the journal boxes and fitted upon 1% stitute a new cap. It will, of course, be the ends of the branch pipes, said fuse caps understood thatthe pipes can be carried being each provided with a small aperture on the inside of the truck, as well as upon and a large aperture and fuses closing the the outside of the truck, since the manner apertures, the fuse for the small aperture of mounting the pipes upon the truck is being of a composition which will melt at 110 quite immaterial to the invention. The a lower temperature than that of the large heavy fuse and the light fuse are different aperture, so that if the journal is only in size, so that there is no possibility of one slightl heated the small aperture will be bein confused with the other, and two of opene while if the journal is hot the large the light fuses or two of the heavy fuses aperture will also be opened, thereby ex- 115 used by mistake. hausting the air from the air-brake system Having thus described the invention, what and causing the air brakes to be applied, I claim as new and desire to secure by Letthe escaping air in e'ther instance serving ters Patent, is to cool the journal.

1. The combination with a railway car 5 The combination of a journal box, an 12o including its truck and air brake systems, air pipe leading to the journal box and in of pipes leading from the air brake pipe communication with a source of compressed to the journal boxes of the truck, and fuse air, a fuse cap arranged within the journal means closing the ends of the pipes and box and applied to the end of the an pipe,

constructed to permit a small quantity of said fuse cap being provided with a small air to escape and play upon the journals aperture and a large aperture, and fuses when the journals become only slightly closing the apertures, the fuse for the small heated, the amount of the escaping air beaperture being of a composition that will melt at a lower temperature than that of In testimony whereof I have signed my the large aperture, so that if the journal is name to this specification in the presence of slightly heated the small aperture will be two subscribing witnesses.

opened, while if the. journal is hot the large PAUL J. MURRAY. aperture will also be opened, the escaping Witnesses: air in either instance serving to cool the B. C. TURNER, journal. E. H. Fomr. 

